/* Header controls share the site's palette tokens and native button behavior. */
.site-header {
  margin-bottom: 16px;
}
.header-right {
  gap: 12px;
}
.header-note {
  margin-right: 12px;
}
.theme-choice {
  display: flex;
  align-items: center;
  gap: 9px;
}
.themes-label {
  color: var(--muted);
  font-size: var(--text-14);
}
.palette-picker {
  position: relative;
}
.palette-toggle {
  min-width: 114px;
  justify-content: center;
}
.palette-chevron {
  flex: 0 0 auto;
}
.palette-toggle[aria-expanded="true"] {
  border-color: var(--accent);
}
.palette-toggle[aria-expanded="true"] .palette-chevron {
  transform: rotate(180deg);
}
.palette-menu {
  position: absolute;
  z-index: 30;
  top: calc(100% + 9px);
  left: 0;
  width: 204px;
  max-height: min(560px, calc(100svh - 150px));
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 12px 32px rgb(0 0 0 / 24%);
}
.palette-menu-label {
  margin: 4px 8px 8px;
  font: var(--text-10) var(--mono);
  letter-spacing: 1px;
  color: var(--muted);
}
.palette-menu button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: var(--ink);
  text-align: left;
  font-size: var(--text-14);
}
.palette-menu button:hover,
.palette-menu button[aria-pressed="true"] {
  background: var(--accent-tint);
}
.palette-menu button:focus-visible {
  outline-offset: 1px;
}
.palette-check {
  margin-left: auto;
  color: var(--accent);
  visibility: hidden;
}
.palette-menu button[aria-pressed="true"] .palette-check {
  visibility: visible;
}
@media (max-width: 600px) {
  .site-header {
    height: auto;
    min-height: 68px;
    padding: 12px 0;
    flex-wrap: wrap;
    gap: 12px;
  }
  .site-header .brand {
    flex-shrink: 0;
  }
  .header-right {
    gap: 8px;
    margin-left: auto;
  }
  .header-right .theme-toggle {
    min-height: 36px;
    padding: 7px 11px;
  }
  .palette-toggle {
    min-width: 110px;
  }
  .theme-choice {
    gap: 7px;
  }
}